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The fan blade includes a blade root at one end thereof configured for sliding insertion into a substantially axially extending slot defined in a periphery of a fan rotor hub. The blade comprises a first passageway extending at least partially through the blade root, in a direction generally parallel

The fan blade includes a blade root at one end thereof configured for sliding insertion into a substantially axially extending slot defined in a periphery of a fan rotor hub. The blade comprises a first passageway extending at least partially through the blade root, in a direction generally parallel to an axial direction of the slot. It also comprises a second passageway extending at least partially through the blade root to intersect with the first passageway. A first member is provided in the first passageway, the first member configured to be retained in the first passageway once inserted therein, and a second member is provided in the second passageway, the second member having one end in cooperating engagement with the end of the first member. The second member has a portion projecting out of the bottom face of the blade root a distance sufficient to contact an inner surface of the slot and thereby force the blade outwardly in the slot.

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1. A fan blade for a turbofan gas turbine engine, the blade including a blade root at one end thereof configured for sliding insertion into a substantially axially extending slot defined in a periphery of a fan rotor hub, the slot extending from a front side of the hub to a back side, the blade root

1. A fan blade for a turbofan gas turbine engine, the blade including a blade root at one end thereof configured for sliding insertion into a substantially axially extending slot defined in a periphery of a fan rotor hub, the slot extending from a front side of the hub to a back side, the blade root having side faces respectively corresponding to the front and back sides of the hub, the blade root also having a bottom face which opposes the slot when the blade is inserted in the slot, the blade comprising: a first passageway extending at least partially through the blade root from one of said side faces of the blade root in a direction generally parallel to an axial direction of the slot, the first passageway having an entrance in one of said side faces disposed to be accessible to a service person when the blade is inserted in the slot;a second passageway extending at least partially through the blade root from the bottom face of the blade root to intersect with the first passageway;a first member provided in the first passageway, the first member configured to be retained in the first passageway once inserted therein; anda second member provided in the second passageway, the second member having one end in cooperating engagement with the first member such that movement of the first member in a direction of the first passageway causes the second member to move in a direction of the second passageway and extend outwardly, the second member thus having a portion projecting out of the bottom face of the blade root a distance sufficient to contact an inner surface of the slot and thereby force the blade outwardly in the slot. 2. The blade as defined in claim 1, wherein the first member has one end in cooperating engagement with an end of the second member. 3. The blade as defined in claim 2, wherein the first passageway and the second passageway have a circular cross section. 4. The blade as defined in claim 3, wherein the first passageway and the second passageway have a substantially equal diameter. 5. The blade as defined in claim 2, wherein the cooperating engagement between the first member and the second member is provided by a pair of mating bevelled surfaces, one of the surfaces at the end of the first member and the other of the surfaces at the end of the second member. 6. The blade as defined in claim 1, wherein the first passageway and the second passageway are orthogonal at their intersection. 7. The blade as defined in claim 1, wherein the first passageway spans substantially across the entire length of the blade root. 8. The blade as defined in claim 7, wherein the cooperating engagement is made substantially at a center of the length of the first passageway. 9. The blade as defined in claim 1, wherein the second member includes a first portion and a second portion, both being juxtaposed in the second passageway and made of a different material. 10. The blade as defined in claim 9, wherein the second portion is more resilient than the first portion and contacts the inner surface of the slot. 11. The blade as defined in claim 10, wherein the second portion is made of nylon. 12. The blade as defined in claim 10, wherein the second portion is made of rubber. 13. The blade as defined in claim 1, wherein the first passageway and the second passageway are substantially linear. 14. The blade as defined in claim 1, wherein the first passageway is provided substantially at a center of the blade root in the widthwise direction. 15. A fan blade for a gas turbine engine, the blade having a blade root configured to be slidingly inserted into a blade retention slot provided at a periphery of a fan rotor hub, the blade comprising: a first pin having a first end and a second end, the second end of the first pin having a surface obliquely angled relatively to sides of the first pin;a second pin having a first end and a second end, the first end of the second pin having a surface obliquely angled relatively to sides of the second pin and engaging the obliquely angled surface of the second end of the first pin; anda third pin having a first end and a second end, the third pin having its first end engaging the second end of the second pin;a first passageway provided substantially parallel to a longitudinal axis of the blade retention slot, the first pin inserted in the first passageway;a second passageway orthogonally intersecting the first passageway, the second pin and the third pin inserted in the second passageway;whereby, when a longitudinal force is provided at the first end of the first pin, a longitudinal reaction force is created in the second pin, which causes the second end of the third pin to extend from the blade root and engage the blade retention slot to push the blade root away from a bottom of the slot. 16. The blade as defined in claim 15, wherein the obliquely angled surfaces are bevelled surfaces with complementary angles. 17. A method of outwardly seating a fan blade root initially loosely fitted within a blade retention slot on a fan rotor hub, the method comprising: providing a pair of intersecting passageways located within the blade root, one of the passageways extending in a substantially axial direction of the blade root and having an opening on a side face of the blade root, the other passageway extending ina substantially radial direction and having an opening on a bottom side of the blade root; andpushing a first member extending in the axial passageway and transferring a motion of the first member to a second member extending in the radial passageway, the motion causing a portion of the second member to extend out of the opening on the bottom side and abut against a surface of the blade retention slot, the first member :being pushed until the blade root is outwardly seated within the blade retention slot.